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See the current positions of the Sun and the Moon on a global map. Find out the time, date, and location of any place with the Sun near its zenith or the Moon near its zenith.
Day and Night® offers quality-driven, sophisticated home comfort solutions, such as air conditioners, furnaces, heat pumps, ductless systems and more. Find a dealer near you and explore the different options for a properly matched system.
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- Earth’s Rotation
- Axial Tilt
- Seasonal Changes
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Earth’s rotation occurs from west to east, which is why the Sun always appears to be rising on the eastern horizon and setting on the western. If you could view the Earth from above, looking down at the northern polar region, the planet would appear to be rotating counter-clockwise. However, viewed from the southern polar region, it appears to be r...
As already noted, due to the Earth’s axial tilt(or obliquity), day and night are not evenly divided. If the Earth’s axis were perpendicular to its orbital plane around the Sun, all places on Earth would experience equal amounts of day and night (i.e. 12 hours of day and night, respectively) every day during the year and there would be no seasonal v...
Of course, since the Earth is rotating around the Sun and not just on its axis, this process is reversed during the course of a year. Every six months, the Earth undergoes a half orbit and changes positions to the other side of the Sun, allowing the other hemisphere to experience longer days and warmer temperatures. Consequently, in extreme places ...
Learn how Earth's rotation, axial tilt, and orbit around the Sun create the cycle of day and night and the seasons. Find out how the length of day and night varies across the planet and why the Moon and stars are visible at different times.
Learn how Earth and other planets have day and night cycles, why they change length, and how they are related to the tilt of the planet's axis and its orbit around the Sun. Explore the causes and effects of day and night on Earth's climate, seasons, and history.
